Refractory Lining | High‑Temp Liner for Aluminum Launder & Filter Box

Our refractory lining is specially engineered for aluminum foundry and molten‑aluminum transfer systems, widely applied in aluminum transfer launders, filter boxes, distribution troughs and melting furnaces. Made of high‑alumina / SiC composite refractory materials, the lining forms a stable protective layer against high‑temperature molten aluminum erosion, chemical corrosion and frequent thermal cycling.

Multi‑layer structural design combines working hot face layer and thermal insulation backup layer, effectively reduces heat loss during aluminum liquid transportation, minimizes temperature drop per meter, lowers dross accumulation and improves overall casting stability. Available in precast blocks, cast‑in‑place linings and customized shapes to match your existing equipment dimensions.

Real‑World Application Cases：

Case 1：Aluminum Alloy Ingot Casting Production Line

Our precast aluminum transfer launder is applied in 12‑tons‑per‑day aluminum ingot casting line.

• Working condition：Molten aluminum flows from holding furnace to filtering box and casting machine through sectional assembled launder.
• Customer pain point：High temperature drop, heavy dross adhesion, frequent lining cracking.
• Solution：Custom‑size prefabricated refractory launder with non‑wetting inner surface.
• Project result：Low heat loss, less aluminum dross, reduce onsite casting‑site installation time, extend service life of the whole la

Case 2：Aluminum Sheet & Foil Foundry Plantunder system.

 

Used for molten‑aluminum transportation for rolled aluminum sheet production.

• Working condition：Continuous long‑distance molten aluminum transfer, frequent thermal shock from start‑stop production cycles.
• Solution：Section‑by‑section precast launder components, matched with refractory lining and BN coating.
• Project result：Stable molten aluminum temperature, effectively avoid cracks caused by rapid temperature change, reduce maintenance frequency.

Recycled aluminum alloy production with high‑impurity molten aluminum.

Case3：Recycled Aluminum Casting Factory

• Working condition：Erosion from impure recycled molten aluminum, severe slag scouring.
• Solution：High‑performance precast refractory launder with anti‑erosion formula.
• Project result：Resist slag corrosion, lower impurity mixing risk, convenient for partial replacement of damaged launder segments.